How to be a subdirectory Tomcat IP restrictions ?

As stated in my Web system webapps directory, the directory where the system is called zzzs, under zzzs directory has a subdirectory named manage, I think this subdirectory manage the IP restrictions , how to achieve ?
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your project should be included in the foreground and background , the filter may have been carried out to determine whether or login . IP can be judged on the visitors landing on the background jsp page , if not certified IP jump to the prompt without permission page.
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filters try
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right, put this url manager module is exposed and can access the url configuration of ip all about, to do something inside the filter to determine